Some Falling Balls

I decided I liked the idea of a non-interactable simulation of falling balls, but I've made it a bit more interesting to watch, and added a scoring element. The thing will track how many falling balls are on screen, and keep track of the most balls there has ever been.  The most balls I ever got was 36. Can you do better?

Previous Description:
I was planning to make something that generated balls from above for the player to dodge, but as I've never used 2d nodes before, this is what I got. Rather than give up, or hide, I am submitting what I have, which does sort of do a thing.